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2. Disassembly and Reassembly
Stop operation of the air conditioner and remove the power cord before repairing the unit.

2-1 Indoor Unit

No 1 Parts Front Grille Procedure 1) Stop the air conditioner operation and block the main power. Remark
2) Open the Front Grille by pulling right and left sides of the hook.
3) Loosen 1 of the right screw and detach the Terminal Cover. 4) Detach the thermistor from the Front Grille.
5) Loosen 2 fixing screws of Front Grille.

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Remark

Control-In (Main PCB)

1) Take all the connector of PCB upper side out. (Inclusion Power Cord) 2) Detach the outdoor unit connection wire from the Terminal Block. 3) Loosen 4 fixing screws of Ass'y Control-In.

Tray Drain

1) Pull Tray Drain out from the Back Body.

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Parts Heat Exchanger 1) 2) 3) 4)
Procedure Loosen 2 fixing earth screws of right side. Detach the Connection Pipe. Detach the Holder Pipe at the rear side. Loosen the 3 fixing screws of right and left side. 5) Lifting the Heat Exchanger up a little to push the up side for separation from the indoor unit.
Fan Motor & Cross Fan
1) Loosen the fixing screw and detach the Motor Holder. 2) Detach the Fan Motor from the Fan. 3) Detach the Fan From the left Holder Bearing.

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2-2 Outdoor Unit
No 1 Parts Common Work Procedure 1) Loosen each 3 fixing screws on both right and left Cabinet-Side edge and a fixing screw on the Cabinet-Front lower to detach the Cabinet-Front. Remark
2) Loosen 2 fixing screws of the Ass'y-Control.
3) Loosen 6 fixing screws of the Cabinet-Side RH.
4) Loosen 2 fixing screws of the Cabinet-Side LF.

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Heat Exchanger

1) Loosen 2 fixing screws on both sides. 2) Disassemble the pipe in both inlet and outlet with welding torch. 3) Detach the Heat Exchanger.

Compressor

1) Loosen the Terminal Cover nut to open the Terminal Cover. 2) Disassemble the cloth sound felt. 3) Disassemble the pipe in both inlet and outlet of the Compressor with welding torch. 4) Disassemble the pipe in both inlet and outlet of the Condenser with welding torch. 5) Loosen the 3 bolts at the bottom. 6) Detach the Compressor.

Power consumption(W)

700 1.0/0.0

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3-2-3 Capacity and Power Consumption Distributions
Capacity and power consumption distributions according to the length of connecting pipe between indoor unit and outdoor unit.

4.00 1,100

Power consumption(Heating)

1.00 7.5

700 7.5
Length of Connecting Pipe(m)

4.20 1,350

3.80 7.5

1,150 7.5

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4. Set Up the Model Option
4-1 Setting Option Setup Method

ex) Option No. :

Step 1 : Enter the Option Setup mode. 1st 2nd Take out the batteries of remote control. Press the temperature insert the battery again. button simultaneously and
Make sure the remocon display shown as
Step 2 : Enter the Option Setup mode and select your option according to the following procedure.

Feature

Display
Setting Option SEG1. Push the button to set the display panel to. Every time you push the button, the display panel reads. repeatedly.
Setting Option SEG2. Push the button to set the display panel to. Every time you push the button, the display panel reads. repeatedly.

3 1,4 2,5

Change it into the set display of Option SEG3 and SEG4 with the button.
Setting Option SEG3. Push the button to set the display panel to. Every time you push the button, the display panel reads. repeatedly.
Setting Option SEG4. Push the button to set the display panel to. Every time you push the button, the display panel reads. repeatedly.

4/6/04 3:00 PM

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Set Up the Model Option

Change it into the set display of Option SEG5 and SEG6 with the button.
Setting Option SEG5. Push the button to set the display panel to. Every time you push the button, the display panel reads. repeatedly.
Setting Option SEG6. Push the button to set the display panel to. Every time you push the button, the display panel reads. repeatedly.

6,9 7,10 8,11

Change it into the set display of Option SEG7 and SEG8 with the button.
Setting Option SEG7. Push the button to set the display panel to. Every time you push the button, the display panel reads. repeatedly.
Setting Option SEG8. Push the button to set the display panel to. Every time you push the button, the display panel reads. repeatedly.
Change it into the set display of Option SEG9 and SEG10

with the

button.
Setting Option SEG9. Push the button to set the display panel to. Every time you push the button, the display panel reads. repeatedly.
Setting Option SEG10. Push the button to set the display panel to. Every time you push the button, the display panel reads. repeatedly.

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Step 3 : Upon completion of the selection, check you made right selections. Whenever you press the button, the set Option will be displayed.
Step 4 : Pressing the ON/OFF button ( ) When pressing the operation ON/OFF key with the direction of remote controller for unit, the sound "Ding" is heard and the OPERATION LED lamp is flickering at the same time, then the input of option is completed. (If the "ding" sound isn't heard, try again pressing the ON/OFF button.)

Step 5 : Unit operation test-run First, Remove the battery from the remote controller. Second, Re-insert the battery into the remote controller. Third, Press ON/OFF ( ) key with the direction of remote controller for set.
Error Mode 1st 2nd If all lamps of indoor unit are flickering, Plug out, plug in power plug again and press ON/OFF key to retry. If the unit is not working properly or all lamps are continuously flickering after setting the option code, see if the correct option code is set up for its model.

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SH09AWH

SH09ZWH AQ09WHWE KFR-25G / SWA F b

Page 18

5. Troubleshooting
Check the basic items first to judge if the problem was caused by breakdown or misuse. If none of the basic items are related to the problem, please scrutinize the machine according to the 'Breakdown Diagnosis by Symptoms' method.
5-1 Basic Breakdown Diagnosis Items
1. The input voltage should be rating voltage 10% range. The airconditioner may not operate properly if the voltage is out of this range. Is the link cable linking the indoor unit and the outdoor unit linked properly? The indoor unit and the outdoor unit shall be linked by 5 cables. Check the terminals if the indoor unit and outdoor unit are properly linked by the same number of cables. Otherwise the airconditioner may not operate properly. When a problem occurs due to the contents illustrated in the table below it is a symptom not related to the malfunction of the airconditioner.
No 1 Operation of air conditioner The OPERATION indication LED(GREEN) blinks when a power plug of the indoor unit is plugged in for the first time. In a COOL operation mode, the compressor does not operate at a room temperature higher than the setting temperature that the INDOOR FAN should operate. In a HEAT operation mode, the compressor does not operate at a room temperature lower than the setting temperature that indoor fan should operate. Fan speed setting is not allowed in DRY( ) mode. Explanation It indicates power is on. The LED stops blinking if the operation ON/OFF button on the remote control unit is pushed. In happens after a delay of 3 minutes when the compressor is reoperated. The same phenomenon occurs when a power is on. As a phenomenon that the compressor is reoperated after a delay of 3 minutes, the indoor fan is adjusted automatically with reference to a temperature of the air blew. The speed of the indoor fan is set to LL in DRY mode. Fan speed is selected automatically in AUTO mode. ) Compressor operation is controlled automatically in DRY mode depending on the room temperature and humidity. When the unit is turned off while de-ice is activated, the compressor continues operation for up to 9 minutes (maximum) until the deice is completed. Timer is being activated and the unit is in ready mode. The unit operates normally if the timer operation is cancelled. The compressor and indoor fan stop intermittently if room temperature exceeds a setting temperature in order to protect the compressor from overheated air in a HEAT mode. The compressor operates in a reverse cycle to remove exterior ice in a HEAT mode, and indoor fan and outdoor fan do not operate intermittently for within 20% of the total heater operation The compressor stops intermittently or the fan speed of the indoor unit decreases to prevent inside/outside air frozen depending on the inside/outside air temperature.

Compressor stops operation intermittently in DRY( mode.
Compressor of the outdoor unit is operating although it is turned off in a HEAT mode.
Timer LED(GREEN) of the indoor unit lights up and the air conditioner does not operate. The compressor and indoor fan stop intermittently in HEAT mode.
Indoor fan and outdoor fan stop operation intermittently in a HEAT mode.
The compressor stops intermittently in a COOL mode or DRY mode, and fan speed of the indoor unit decreases.

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5-2 Trouble check in the initial status
5-2-1 Diagnosis and marking of the part in trouble.
Please check the air conditioner operation status and write the check result in the chart in the room.
LAMP Description OPERATION TIMER TURBO
Indoor unit room temperature sensor error (open or short) Indoor unit heat exchanger temperature sensor error (open or short) Indoor fan motor mal function EEPROM error Option error (option wasn't set up or option data error)
: Lamp off : Lamp flickering
5-2-2 Operation with abnormal motion
No 1 Abnormal condition No response from the remote control operation signal. Inspection Plug out and plug in 5 seconds later. Able to operate the remote control. Unable to operate the remote control. Initial Diagnosis OK Press the button in the indoor unit. If it operates, the remote control and indoor unit receiver are in trouble. If not, the indoor unit is in trouble.
Unable to operate the outdoor unit
Press the TURBO button with the remote control. In 3 minutes, check the voltage between the indoor unit terminal block N(1) and 1.

AC200V ~ AC240V

Problem with the outdoor unit or PCB
No power source displayed.
Problem with the relay (RY71) or PCB

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5-3 Breakdown diagnosis by symptoms
5-3-1 No Power (completely dead)-Initial diagnosis
1. Checklist : 1) Is input voltage normal? 2) Is AC power linked correctly? 3) Is input voltage of DC regulator IC KA7805 (IC02) normal? (11VDC-12.5VDC) 4) Is output voltage of DC regulator IC KA7805 (IC02) normal? (4.5VDC-5.5VDC) 2. Troubleshooting procedure
Unplug the power cord and plug it after 5 seconds
Press the Power Button on the remote control unit to operate the air conditioner

does not operate

operate
x Check the display board
x Check the indoor unit control board
Check whether two wires of power cord are connected correctly to the terminal block and control board.

Reconnect wires correctly
Check whether the fuse on the control board is normal. F701: 3.15[A]/250[V]

Replace fuse

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Troubleshooting
5-3-2 When the Indoor Unit Fan Does Not Operate. (Initial Diagnosis)
1. Checklist : 1) Is the indoor unit fan motor properly connected with the connector (CN72)? 2) Is the AC voltage correct? 3) Is HALL IC in indoor fan motor properly connected with the connector (CN44)? 4) Is the running capacitor (CR71) properly connected with PCB board? 2. Troubleshooting procedure
After unplugging out the power cord should be reconnected within 5 seconds.
Does the OPERATION lamp blink?
Check as in the procedure "NO power parts"

Yes No

Does the Solid State Relay(SS71) work properly? Test rod location + SS71SS71Yes No

Micom is out of order.

Normal Voltage

PCB is out of order.

PCB should be replaced.
Motor Fan-Capacitor is out of order
Replace Motor Fan-Capacitor
Fan motor is out of order.
Fan motor should be replaced.

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5-3-3 When the Outdoor Unit Does Not Operate. (Initial Diagnosis)
1. Checklist : 1) Is input voltage normal? 2) Is the set temperature of the remote control higher than room temperature in COOL mode? 3) Is the set temperature of the remote control lower than room temperature in HEAT mode? 4) Is the POWER IN connector (CN71) linked correctly? 5) Is the outdoor unit properly connected with the TERMINAL BLOCK connector(N(1), 1, 2, 3)? 2. Troubleshooting procedure
Does the OPERATION lamp blink
Check as in the procedure "No Power parts"

Yes Yes

Room temperature sensor is out of order
Does the timer lamp blink during operation?

Micom (IC04) is faulty.

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5-3-5 In the HEAT mode, When there is no warm air current. Check this fist;
1. Checklist : 1) Is the set temperature of Remote Control lower than room temperature in Heat mode? 2) Is the Indoor PCB properly connected with the CN71 connector? 2. Troubleshooting procedure
After training on, the heating operation should start in 5 minutes.
Is the number #38 of Micom (IC04) DC 5.0V?

Abnormal Micom

Is the number checking #11 of IC05 (ULN2003A) LOW?
Is the voltage between CN71 #1 and CN71 #5 rating voltage 10% range

Below 0.5V?

Poor ASS'Y PCB Replace

Over 4.9V?

MICOM Error or Connector(CN43) check

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5-3-7 Room Pipe sensor failure
Indoor unit heat exchanger temperature sensor error (open or short)
1. Check the assembly condition of the sensor connector(CN43) on the indoor unit Main PCB and if not assembled, reassemble the connector accurately. 2. Detach the room pipe sensor connector(CN43) and check the resistance between connector 3 and 4.
Temperature(C) 25 Resistance Value(Kohm) 14.68 12.Temperature(C) 40 Resistance Value(Kohm) 8.31 6.94 5.83 The data tolerance is 3%. Others
If the above data is not met, replace the room pipe sensor. 3. Assemble the room pipe sensor to PCB, plug in, and check the voltage of connector 3 and 4. If the resistance is below 0.5V or over 4.9V, replace the indoor Main PCB. (short or disconnected in the PCB board)
5-3-8 When the remote control is not receiving.
1. Check if the connector was normally assembled. 2. Put the set in operation and check the voltage of No. 3(+) and No. 2(-) of the main PCB CN91 while operating the remote control. When the voltage descends below 3V, the assembly module PCB is normal and the main PCB is poor. Then replace the main PCB. 3. Replace the assembly display PCB because the module PCB is poor if the voltage between No. 2~3 of CN91 maintains 5V after the remote control starts operation.

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5-4 PCB Inspection Method
5-4-1 Pre-inspection Notices
1. Check if you pulled out the AC power plug when you eliminate the PCB or front panel. 2. Don't hold the PCB side not impose excessive force on it to eliminate the PCB. 3. Don't pull the lead wire but hold the whole housing to connect or disconnect a connector to the PCB.
5-4-2 Inspection Procedure
1. Check connector connection and peeling of PCB or bronze coating pattern when you think the PCB is broken. 2. The PCB is composed of the 3 parts. q Main PCB Part : MICOM and surrounding circuit, relay, room fan motor driving circuit and control circuit, sensor driving circuit, power circuit of DC12V and DC5V, and buzzer driving circuit. q Display part : LED lamp q Switch part : Switch
5-4-3 Detailed Inspection Procedure
No Procedure Plug out and pull the PCB out of the electronic box. Check the PCB fuse. Supply power. If the operating lamp twinkles at this time, the above 1)~3) have no relation. Inspection Method 1) Is the fuse disconnected? (F701) Cause Overcurrent Indoor Fan Motor Short AC Part Pattern Short of the MAIN PCB
Checking the power voltage. 1) Is the DB71input voltage AC200V~AC240V? Power Cord is fault, Fuse open. Wrong Power Cable Wiring, AC Part is faulty. Switching Trans or Power Circuit is faulty

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8-2 Outdoor Unit
MOTOR CAPACITOR COMP CAPACITOR

FM1 O.L.P

FAN MOTOR OVER LOAD PROTECTOR

Code No : DB98-15607A

Page 44

9. Schematic Diagram

9-1 Indoor Unit

ELECTRONICS

This Service Manual is a property of Samsung Electronics Co., Ltd. Any unauthorized use of Manual can be punished under applicable International and/or domestic law.
Samsung Electronics Co., Ltd. Apr. 2004. Printed in Korea. Code No. DB98-15924A(3-1)